Whereas his earlier solo record, "materials", was the result of a research work in studio, "solo" shows how Jonas Kocher brillantly uses his accordion in concert. His music caries in itself huge contrasts, between reserve and explosion, as if this dualitly was engraved in the back and forth bellows's mouvement. Alternations of low and high frequencies, slappings and breaths build a perfectly controlled form inside the improvised frame.
Accordionist dedicated to improvisation, Jonas Kocher collaborates regularly with musicians such Michel Doneda, Christian Wolfarth, Christoph Schiller, Olivier Toulemonde, Alfredo Costa Monteiro, Luca Venitucci, Joke Lanz, d'incise, Jacques Demierre, Christian Kesten, Gaudenz Badrutt, Christian Müller, ... . Jonas Kocher's work explores the relationships between tone, noise and silence and the processus of listening. As composer he realises projects which are situated between composed theater, installation and concert pieces. His compositions has been played at Biennale Bern 2010, Theater Basel, Zentrum Paul Klee, Festival Encuentros Buenos Aires, KlangKunstBühne Berlin, Centre Dürrenmatt Neuchâtel, Festival Concentus Moravie, Zagreb Biennale. He composes also for hörspiel and theater.